/** * @license * Copyright 2020 Google LLC. All Rights Reserved. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * ============================================================================= */ import { Unpack } from '@tensorflow/tfjs-core'; import { reshape } from './Reshape'; import { slice } from './Slice'; export function unpack(args) { const { inputs, backend, attrs } = args; const { value } = inputs; let { axis } = attrs; if (axis < 0) { axis += value.shape.length; } const valueRank = value.shape.length; const num = value.shape[axis]; const outShape = new Array(valueRank - 1); let outIndex = 0; for (let i = 0; i < valueRank; i++) { if (i !== axis) { outShape[outIndex++] = value.shape[i]; } } const begin = new Array(valueRank).fill(0); const size = value.shape.slice(); size[axis] = 1; const res = new Array(num); for (let i = 0; i < res.length; i++) { begin[axis] = i; const tempRes = slice({ inputs: { x: value }, backend, attrs: { begin, size } }); res[i] = reshape({ inputs: { x: tempRes }, backend, attrs: { shape: outShape } }); backend.disposeIntermediateTensorInfo(tempRes); } return res; } export const unpackConfig = { kernelName: Unpack, backendName: 'cpu', kernelFunc: unpack }; //# 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xuZXhwb3J0IGNvbnN0IHVucGFja0NvbmZpZzogS2VybmVsQ29uZmlnID0ge1xuICBrZXJuZWxOYW1lOiBVbnBhY2ssXG4gIGJhY2tlbmROYW1lOiAnY3B1JyxcbiAga2VybmVsRnVuYzogdW5wYWNrIGFzIHVua25vd24gYXMgS2VybmVsRnVuY1xufTtcbiJdfQ==